module BT1
  class Store
    attr_accessor :data

    def initialize
      @size = 0
      @data = []
    end

    def size
      @data.size
    end

    def each(&block)
      @data.each(&block)
    end

    def update(new_data)
      new_store = []
      new_data.each do |new_rec|
        if old_rec = @data.find {|e| e == new_rec }
          new_rec.mark_reported if old_rec.reported?
        end
        new_store << new_rec
      end
      @data = new_store
    end

    def fetch(a_number)
      unreported = []
      @data.each do |r|
        unless r.reported? || unreported.size == a_number
          unreported << r
        end
      end
      unreported[0...a_number].each {|u| u.mark_reported}
    end

  end
end